Which of the following has the highest energy content per gram?
Correct answer: C. Lipid
- A. Carbohydrate
- B. Protein
- C. Lipid
- D. Nucleic acid
Explanation
Lipids provide about 9 kcal/g, while carbohydrates and proteins provide about 4 kcal/g each.
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About Carbohydrates
Carbohydrates are organic compounds classified as monosaccharides, disaccharides and polysaccharides according to their structure and hydrolysis products. The topic covers glycosidic bonds, glucose and fructose, sucrose, lactose and maltose, starch, glycogen and cellulose, along with their roles in energy storage, structural support and food tests.
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